Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Kelly J Ocallahan, MD

Individual provider Gastroenterology Physician · NPI 1427056795

Kelly J Ocallahan, MD is a Gastroenterology in Worcester, Massachusetts. Graduated from University of Massachusetts Medical School in 1993, 33 years ago. Practices with New England Gastroenterology Associates, PC, a 3-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
33
Trained at
University of Massachusetts Medical School
Licensed in
MA
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

100 Central St Fl 4
Worcester, MA 01608-1209
Phone: (508) 831-0708
Fax: (508) 831-0272
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 159560 (MA)

Record details

NPI number1427056795
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 12, 2005
Last updated in NPPESJuly 13, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Medical schoolUNIVERSITY OF MASSACHUSETTS MEDICAL SCHOOL
Graduated 1993 (33 years in practice)
Group practice New England Gastroenterology Associates, Pc — 3 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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